Crossing-grate.



G. W. ENGLB.

CROSSING GRATE.

APPLIOATION FILED JULY 11, 1910.

1,035,695, Patented Aug. 13, 1912.

rag/y ZayM/ZWZIQ Wiesses Inventor by I W Attorneys street crossings UNITED. STATES PATENT OFFICE.

GEORGE W. ENG-LE, OF CANTON, SOUTH DAKOTA.

CBOSSINGsGRATE.

Specification of Lettersratent.

Application filed July 11, 1910. Serial No. 571,399.

Patented Aug. 13, 1912.

To all whom it may concern:

Be it known that I, GEORGE W. ENGLE, a citizen of the United States, residin at Canton, in the county of Lincoln and tate 5 of South Dakota, have invented a new and ,15 the use of which the conduit can be easily cleaned, and kept in working order. a

In the accompanying drawing formin a part of this specification, Figure 1 is a p an view of the grate. ,Fig. 2 is an enlarged '20 cross section on the line 2-2 of Fig. 1.

Fig; 3 is an enlarged section on the line 3-3 of Fig. 1. I

As shown in the drawing, the grate is composed of a series of parallel channel bars 5 which are fastened together in spaced relation by end angle bars 6, and a bottom center cross bar 7. The bars 6 are arranged so that one of the flan'ges thereof stands perpendicular and the other horizontal, the perpendicular flanges extending across the ends of the bars 5, and the horizontal flanges being located at the bottom of the grating.

The tops of the perpendicular flan es are flush with the tops of the bars 5. T e bars 5 5 are arrlanged so that their flanges extend perpendicularly and downwardly, said bars extending at their ends into the angles of the bars 6'. By this construction agrate is had which is strong and. durable, and smooth on top.

The bars 5 and Bare fastened together by rivets, bolts or other suitable fastening means 8 which pass through the horizontal flanges of the bars 6, and through the webs of the bars 5. Similar fastening means 9 pass through the center cross bar 7 and the webs of the bars 5. The fastening means at the end of each row thereof are fitted with sleeves 10 which are located in 'the'channels of the bars 5'between the webs thereof and the horizontal flanges of the bars 6. Similar sleeves are placed around the fastening means 9 at the center of the row. These sleeves are provided to prevent the side thrust, occasioned by persons walking on the grating, from gradually pushin the outside edges of the bars 5 off the end and center cross bars, and letting the same down, it being an inevitable conclusion from the foregoing that the terminal bars 5 have limited sliding movement upon the angle bars 6. Owing to the movement of which the terminal bars 5 are capable, the grate will expand and contract to accommodate the expansion and contraction of the structure in which the grate is mounted.

The grate herein described is light, strong and durable, it being made entirely of steel. By its use, the .conduit for surface water can be easily cleaned and kept in working order, and the conduit under the crossing thaws out just as soon as the street" gutter, and is always open and'visible for inspection.

' What is claimed is:

A crossing grate-comprising spaced channel bars having their channels downwardly presented; angle bars receiving the ends of the-channel bars; securin elements engaging the channel bars an the angle bars; and sleeves surrounding the securing elements and terminally engagedby the angle bars; the terminal channel bars being slidable upon the angle bars to provide for expansion and contraction in the grate, to accommodate the expansion and contraction of the structure in which the grate is .mounted, the sleeves constituting means for supporting the terminal channel bars when the outer/flanges thereof are advanced beyond the ends of the, angle bars by foott'hrust.

In testimony that I claim the foregoing as my own, I have hereunto aflixed my signature in the presence of two witnesses.

GEORGE W. ENGLE.

Witnesses BEN CHUROHYARD, ABA Fonnns'r, Jr. 

